EP3225360A1 - Item for tightening to the correct torque, and electrical protection device comprising at least one terminal connected by means of such an item - Google Patents

Item for tightening to the correct torque, and electrical protection device comprising at least one terminal connected by means of such an item Download PDF

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Publication number
EP3225360A1
EP3225360A1 EP17154097.4A EP17154097A EP3225360A1 EP 3225360 A1 EP3225360 A1 EP 3225360A1 EP 17154097 A EP17154097 A EP 17154097A EP 3225360 A1 EP3225360 A1 EP 3225360A1
Authority
EP
European Patent Office
Prior art keywords
accessory
accessory according
aforementioned
screw
end portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17154097.4A
Other languages
German (de)
French (fr)
Other versions
EP3225360B1 (en
Inventor
Daniel Vanzetto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
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Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP3225360A1 publication Critical patent/EP3225360A1/en
Application granted granted Critical
Publication of EP3225360B1 publication Critical patent/EP3225360B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
    • F16B31/021—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load by means of a frangible part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B15/00—Screwdrivers
    • B25B15/001—Screwdrivers characterised by material or shape of the tool bit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/15—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers having a mechanism to mark the work when the selected torque is applied to the work
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • F16B23/0038—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially prismatic with up to six edges, e.g. triangular, square, pentagonal, Allen-type cross-sections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/10—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/1415—Break members; Arrangements specially adapted for break-bolts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw

Definitions

  • the present invention relates to a clamping accessory designed to clamp two elements relative to each other by the actuation of a screw, said accessory comprising a so-called first part, said first part comprising a first part. end forming a tip adapted to cooperate with the aforementioned screw head, and a second end portion adapted to cooperate with an actuating member, so that the activation of the actuating member causes the screwing of the screw and the above-mentioned clamping, this first part being able to break in two portions when the recommended tightening torque is reached, respectively a first portion comprising the aforementioned first end portion and a second portion comprising the second portion; aforementioned end.
  • breakable connection screws used on certain ranges of equipment, these screws incorporating their own breakable clamping device when the tightening torque is reached. After the tightening maneuver, when the tightening torque is reached, the screw remains in place and the part used for tightening is removed and discarded.
  • the present invention solves these problems and proposes a clamping accessory to the right couple, removable, not presenting a risk of falling object in the table, and allowing to be used via a tool currently present in n any tool box of the user, such as a 4mm hexagonal tool.
  • the subject of the present invention is an accessory of the kind mentioned above, this accessory being characterized in that it comprises a second part mounted tightly around the first part, holding means provided in part on the first part and partly on the second part and being able to hold the second portion of the first part inside the second part of the accessory so as to prevent this second portion from coming out of this second part of the accessory after breaking of the first part.
  • this accessory comprises so-called pre-screwing means provided partly on the first part and partly on the second, these means being able to allow pre-screwing of the accessory by manual actuation of this second part.
  • it comprises a gripping flange projecting on the outer surface of said second portion and extending substantially perpendicularly to said surface, this gripping flange allowing both to pre-screw the driver by hand and to extract the accessory from the equipment when the recommended tightening torque is reached.
  • this collar is integral with the second part.
  • the first part of the accessory is made of a metallic material.
  • the second part of the accessory is made of a plastic material.
  • this second part comprises a zone on which is engraved the value of the tightening torque corresponding to the breaking point of the first part and / or is represented a color representative of this pair.
  • the value of the tightening torque corresponding to the breaking point is 9Nm +/- 0.5 or 5Nm +/- 0.5.
  • the value of the pre-screwing torque is approximately 1 Nm.
  • the aforementioned holding means comprise at least two hooks provided on the inner surface of the second part (respectively the outer surface of the first part), said hooks being able to cooperate with recesses of complementary shape provided on the outer surface of the first part (respectively on the inner surface of the second part).
  • these hooks and their corresponding recesses are three in number and are equidistributed around the axis of the accessory.
  • these pre-screwing means comprise at least two ribs (or portions of smooth surfaces) provided on the inner surface of the second part, these two ribs (or portions of smooth surface) being intended to cooperate with each other. with two portions of smooth surface (or respectively two ribs) located (s) facing these ribs (or smooth surface portions), and belonging to the outer surface of the first part.
  • these ribs are three in number and are evenly distributed around the axis of the accessory.
  • the first part comprises a zone situated between the two abovementioned end portions comprising an annular groove, this zone being able to break upon reaching the right tightening torque.
  • this zone is situated between the aforementioned second end portion and the abovementioned collar.
  • the above-mentioned endpiece has an outer shape comprising six faces capable of cooperating with a complementary recessed shape provided in the screw head.
  • the actuating member comprises a tip having an outer hexagonal shape adapted to cooperate with a complementary shaped orifice provided in the second end portion of the first portion.
  • the subject of the present invention is also an electrical protection device comprising at least one connection point of a conductor on the connection area of the appliance, this appliance being characterized in that this connection is made by means of an accessory having the above mentioned features taken alone or in combination.
  • this conductor is a flexible cable or a rigid cable or a terminal crimped on a cable.
  • connection range is a connection bar.
  • the aforementioned screw is a terminal screw.
  • this accessory S comprises a first part 1 comprising a first end part a, said end piece 2, intended to be introduced into a recessed part 26 of complementary shape provided in the head 25 of a clamping screw 24 ( fig.11 ), such as screw 27b a clamping terminal 27, and a second end portion b, said accessory head 3 intended to cooperate with an actuating member such as a key 17 or a screwdriver.
  • the accessory head 3 comprises an orifice 4 having a shape complementary to the external shape of the end portion of the actuating member, so as to allow the drive of the accessory S in rotation by the actuating member 17.
  • these two forms each consist of six flat panels.
  • the outer surface of the nozzle 2 and the inner surface of the recessed portion 26 of the head 25 of the clamping screw 24 are also made of four flat panels.
  • this accessory head 3 is intended to allow gripping by an installer, and the actuation by means of a tool such as a key 17 or a hex screwdriver, by the same installer, to cause the screw 24 in rotation in order to achieve the aforementioned screwing, the tool being introduced into the above-mentioned orifice 4 of corresponding shape provided in the head of the accessory 3.
  • This accessory S also comprises a second part 5 mounted tightly around the first part 1 so as to surround the head of the accessory 3 and a part of the tip 2 with the exception of its free end portion located the opposite side to the head of the accessory 3, in the manner of a sleeve.
  • this first part 1 is made of a metallic material, while the second part 5 is made of a plastic material.
  • This first part 1 of the accessory is able to break in two portions 1a, 1b respectively first and second, during the screwing done by the commissioning of the actuating member 17, when the tightening stroke has reached the value corresponding to the desired tightening torque.
  • This breaking takes place in a zone z located between the accessory head 3 and the tip 2, this zone z comprising a removal of material 6 provided for this purpose so as to weaken the tip 2 at this point and facilitate breakage. .
  • the removal of material 6 made under the head 3 of the accessory may be made differently depending on the tightening torque from which the accessory S is likely to break.
  • this removal of material 6 will be in the form of a groove 13 machined to the right for a tightening torque of 5Nm, and in the form of a groove 14 having a machining performed on the left for a tightening torque of 9Nm.
  • this accessory 5 also comprises holding means 20,21,23 provided partly on the first part 1 and partly on the second part 5, these means being able to retain the first portion 1a of the first part 1 to the inside the second part 5, after breaking when the first portion 1 continues to rotate under the action of the actuating member.
  • these holding means comprise three hooks 20, 21, 22 provided on the inner surface 8 of the second part 5, said hooks being capable of cooperating with recesses of corresponding shape 23 provided on the outer surface 10 of the first part 1.
  • This accessory S also comprises means 7 to 10 to allow a pre-screwing of the clamping screw 24 before making the actual screwing, so as to facilitate and make the connection maneuver more quickly.
  • these means comprise three ribs 7 provided on the inner surface 8 of the second part 5, these ribs 7 being intended to cooperate with smooth portions 9 provided opposite these ribs on the outer surface 10 of the first part 1 so as to make a pinch of this first part 1 by the second 5, this pinch being adapted to join these two parts in rotation, when actuating the accessory S manually rotating.
  • these ribs 7 are equidistributed around the axis X of the accessory S.
  • the ribs 7 can be provided on the first part 1 and cooperate with corresponding smooth portions 9 provided on the second part 5.
  • the value of the biasing torque will advantageously be 1 Nm.
  • this pruning will be facilitated by the presence of a flange 11 on the outer surface 12 of the second portion 5 and extending substantially perpendicularly to this portion, this gripping collar 11 allowing both to pre-screw the driver to the hand and extract the broken accessory from the equipment.
  • the accessory S according to the invention is introduced into the orifice 26 of the clamping screw 24 via its endpiece 2. Then, the conductor is preached by acting on the flange 11 by means of two hands. Then, the tightening is carried out by means of a tool 17 introduced into the orifice 4 provided in the head 3 of the accessory S until the torque recommended by the equipment manufacturer is reached, after which the The accessory breaks at the breakable section of the gripping zone z. After which, the broken accessory S is removed from the devices via the gripping flange 11, and then thrown, the two portions 1a, 1b of the first part 1 of the accessory S remaining inside the second part. part 5 thanks to the pressure exerted by the second part 5 of the accessory S on the first 1.
  • the figure 11 illustrates the different steps of connecting a cable 16 to the connection range of an appliance via a crimped lug 15 on the cable 16, by means of an accessory S according to the invention.
  • the clamping screw 24 having been introduced into an orifice of the lug 15, this assembly is introduced into a housing of the housing B of the apparatus so that the lug 15 is brought into abutment on the connecting range, after which the screw 24 is inserted into an orifice provided in the connection area, then screwed into a nut (not visible) placed behind this range. Then, the tip 2 of the accessory S is inserted into the opening 26 provided for this purpose in the clamping screw 24. Then, the accessory S is manually pruned, this foresight for maintaining the screw 24 relative to the device.
  • a cable 16 is connected to the connection area of an appliance by means of a terminal screw 27b. Firstly, the cable 16 is introduced into the opening 27a of the terminal 27. After which in -1-, the accessory S is introduced into an orifice of the housing B of the apparatus, then introduced by its end 2 in the hole 26 of the terminal screw 27b.
  • the driver is manually pruned, followed by a screw in -2- by means of a hexagonal tool introduced into the opening provided for this purpose in the accessory S. Then, when the couple clamping is achieved and the breakage performed, all of the accessory S is removed from the orifice of the housing and thrown -3-. Thus, after breaking, the last portions 1a and 1b of the accessory S are held in the second portion 5 of the accessory S by virtue of the presence of the holding means 20,21,22,23.
  • a disposable construction accessory was made for the on-site installers, this accessory remaining in one piece so as to avoid the falling of metallic objects in the board.
  • This accessory allows you to tighten to the right torque by means of any 4mm wide hexagonal tool present in the user's toolbox. It also allows a pre-tightening of the cable to be tightened, when it is put in place, to a value of about 1 Nm, which allows a fast and easy work with two hands. This accessory makes it possible to equip a whole range of electrical equipment, a tightening system with the right couple.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Clamps And Clips (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

La présente invention concerne un accessoire de serrage S par l'actionnement d'une vis, ledit accessoire comportant une partie dite première (1), cette partie dite première comportant une première partie d'extrémité (a) formant un embout (2) apte à coopérer avec la tête de vis précitée, et une seconde partie d'extrémité (b) apte à coopérer avec un organe d'actionnement, de telle manière que l'activation de l'organe d'actionnement entraîne le vissage de la vis et le serrage précité, cette première partie étant apte à se briser en deux portions (1a,1b) lors de l'atteinte du couple de serrage préconisé, respectivement une première portion (1a) comportant la première partie d'extrémité précitée (a) et une seconde portion (1b) comportant la seconde partie d'extrémité précitée (b). Cet accessoire est caractérisé en ce qu'il comporte une seconde partie (5) montée serré autour de la première partie (1), des moyens de maintien prévus en partie sur la première partie (1) et en partie sur la seconde partie (5) et étant aptes à retenir la seconde portion (1b) de la première partie (1) à l'intérieur de la seconde partie (5) de l'accessoire S de manière à empêcher que cette seconde portion (1 b) ne sorte de cette seconde partie (5) de l'accessoire S après la brisure de la première partie (1).The present invention relates to a clamping accessory S by the actuation of a screw, said accessory comprising a so-called first part (1), this so-called first part having a first end portion (a) forming a fitting (2) suitable to cooperate with the aforementioned screw head, and a second end portion (b) adapted to cooperate with an actuating member, such that activation of the actuating member causes screwing of the screw and the aforementioned clamping, this first part being able to break in two portions (1a, 1b) upon reaching the recommended tightening torque, respectively a first portion (1a) comprising the aforementioned first end portion (a) and a second portion (1b) having said second end portion (b). This accessory is characterized in that it comprises a second part (5) tightly mounted around the first part (1), holding means provided partly on the first part (1) and partly on the second part (5). ) and being able to retain the second portion (1b) of the first portion (1) within the second portion (5) of the accessory S so as to prevent this second portion (1b) from this second part (5) of the accessory S after breaking the first part (1).

Description

DOMAINE TECHNIQUETECHNICAL AREA

La présente invention concerne un accessoire de serrage destiné à réaliser le serrage de deux éléments l'un par rapport à l'autre par l'actionnement d'une vis, ledit accessoire comportant une partie dite première, cette partie dite première comportant une première partie d'extrémité formant un embout apte à coopérer avec la tête de vis précitée, et une seconde partie d'extrémité apte à coopérer avec un organe d'actionnement, de telle manière que l'activation de l'organe d'actionnement entraîne le vissage de la vis et le serrage précité, cette première partie étant apte à se briser en deux portions lors de l'atteinte du couple de serrage préconisé, respectivement une première portion comportant la première partie d'extrémité précitée et une seconde portion comportant la seconde partie d'extrémité précitée.The present invention relates to a clamping accessory designed to clamp two elements relative to each other by the actuation of a screw, said accessory comprising a so-called first part, said first part comprising a first part. end forming a tip adapted to cooperate with the aforementioned screw head, and a second end portion adapted to cooperate with an actuating member, so that the activation of the actuating member causes the screwing of the screw and the above-mentioned clamping, this first part being able to break in two portions when the recommended tightening torque is reached, respectively a first portion comprising the aforementioned first end portion and a second portion comprising the second portion; aforementioned end.

ETAT DE LA TECHNIQUE ANTERIEURESTATE OF THE PRIOR ART

Dans le domaine des appareillages électriques, le raccordement électrique des conducteurs, câbles souples ou bien rigides, aux plages de raccordement correspondantes desdits appareillages, est réalisé le plus souvent sur site par des installateurs.In the field of electrical equipment, the electrical connection of the conductors, flexible or rigid cables, to the corresponding connection pads of said apparatus is most often done on site by installers.

Or, ces installateurs sur site ne disposent pas de clef dynamométrique permettant de réaliser un serrage du conducteur sur la plage.However, these installers on site do not have a torque wrench to perform a tightening of the driver on the beach.

En effet, ces clefs dynamométriques sont onéreuses, nécessitent de faire l'objet d'un étalonnage une fois par an, ne présentent souvent pas la bonne fourchette de couples correspondant à la gamme concernée des appareillages, et sont susceptibles de faire l'objet de vols.Indeed, these torque keys are expensive, need to be calibrated once a year, often do not have the right torque range corresponding to the relevant range of equipment, and may be subject to theft.

Dans le cas du raccordement entre le disjoncteur et les câbles de puissance de la ligne à protéger, les bornes des appareils sont parfois serrées sans précision, par une main d'oeuvre de moins en moins qualifiée.In the case of the connection between the circuit breaker and the power cables of the line to be protected, the terminals of the devices are sometimes tightened without precision, by less and less skilled labor.

Il en résulte des campagnes de resserrage pour s'assurer du respect des couples préconisés par le constructeur.This results in retightening campaigns to ensure compliance couples recommended by the manufacturer.

On connaît également la possibilité d'utiliser des outils à six pans de quatre millimètres sur plat. Or, ces outils ne permettent pas de garantir le couple de serrage.It is also known to use tools with hexagonal four-millimeter flat. However, these tools do not guarantee the tightening torque.

On connaît également des vis de raccordement sécables utilisées sur certaines gammes d'appareillages, ces vis intégrant leur propre dispositif de serrage sécable lorsque le couple de serrage est atteint. Après la manoeuvre de serrage, lorsque le couple de serrage est atteint, la vis reste en place et la partie ayant servi au serrage est enlevée et jetée.Also known breakable connection screws used on certain ranges of equipment, these screws incorporating their own breakable clamping device when the tightening torque is reached. After the tightening maneuver, when the tightening torque is reached, the screw remains in place and the part used for tightening is removed and discarded.

EXPOSE DE L'INVENTIONSUMMARY OF THE INVENTION

La présente invention résout ces problèmes et propose un accessoire de serrage au bon couple, amovible, ne présentant pas de risque de chute d'objet dans le tableau, et permettant d'être utilisé par l'intermédiaire d'un outil couramment présent dans n'importe quelle caisse à outils de l'utilisateur, tel un outil à 6 pans de 4mm.The present invention solves these problems and proposes a clamping accessory to the right couple, removable, not presenting a risk of falling object in the table, and allowing to be used via a tool currently present in n any tool box of the user, such as a 4mm hexagonal tool.

A cet effet, la présente invention a pour objet un accessoire du genre précédemment mentionné, cet accessoire étant caractérisé en ce qu'il comporte une seconde partie montée serré autour de la première partie, des moyens de maintien prévus en partie sur la première partie et en partie sur la seconde partie et étant aptes à retenir la seconde portion de la première partie à l'intérieur de la seconde partie de l'accessoire de manière à empêcher que cette seconde portion ne sorte de cette seconde partie de l'accessoire après la brisure de la première partie.To this end, the subject of the present invention is an accessory of the kind mentioned above, this accessory being characterized in that it comprises a second part mounted tightly around the first part, holding means provided in part on the first part and partly on the second part and being able to hold the second portion of the first part inside the second part of the accessory so as to prevent this second portion from coming out of this second part of the accessory after breaking of the first part.

Ainsi, l'on obtient grâce à ces caractéristiques, un accessoire de chantier jetable et imperdable, permettant d'assurer le serrage au bon couple de tous les appareils et accessoires d'une même gamme, cet accessoire pouvant être actionné au moyen de n'importe quel outil banal, par exemple à 6 pans, disponible sur le site.Thus, thanks to these characteristics, a disposable and captive construction accessory is obtained, making it possible to ensure the correct tightening of all the devices and accessories of the same range, this accessory being able to be actuated by means of n ' any ordinary tool, for example with hexagon, available on the site.

Selon une caractéristique particulière, cet accessoire comporte des moyens dits de pré-vissage prévus en partie sur la première partie et en partie sur la seconde, ces moyens étant aptes à permettre un pré-vissage de l'accessoire par un actionnement manuel de cette seconde partie.According to a particular characteristic, this accessory comprises so-called pre-screwing means provided partly on the first part and partly on the second, these means being able to allow pre-screwing of the accessory by manual actuation of this second part.

Selon une autre caractéristique, il comporte une collerette de saisie en saillie sur la surface extérieure de ladite seconde partie et s'étendant sensiblement perpendiculairement à ladite surface, cette collerette de saisie permettant à la fois de pré-visser le conducteur à la main et d'extraire l'accessoire des appareillages lorsque le couple de serrage préconisé est atteint.According to another characteristic, it comprises a gripping flange projecting on the outer surface of said second portion and extending substantially perpendicularly to said surface, this gripping flange allowing both to pre-screw the driver by hand and to extract the accessory from the equipment when the recommended tightening torque is reached.

Selon une caractéristique particulière, cette collerette est venue de matière avec la seconde partie.According to a particular characteristic, this collar is integral with the second part.

Selon une autre caractéristique, la première partie de l'accessoire est réalisée en un matériau métallique.According to another characteristic, the first part of the accessory is made of a metallic material.

Selon une autre caractéristique, la seconde partie de l'accessoire est réalisée en une matière plastique.According to another characteristic, the second part of the accessory is made of a plastic material.

Selon une autre caractéristique, cette seconde partie comporte une zone sur laquelle est gravée la valeur du couple de serrage correspondant au point de rupture de la première partie et/ou est représentée une couleur représentative de ce couple.According to another characteristic, this second part comprises a zone on which is engraved the value of the tightening torque corresponding to the breaking point of the first part and / or is represented a color representative of this pair.

Selon une autre caractéristique, la valeur du couple de serrage correspondant au point de rupture est de 9Nm+/-0,5 ou 5Nm+/-0,5.According to another characteristic, the value of the tightening torque corresponding to the breaking point is 9Nm +/- 0.5 or 5Nm +/- 0.5.

Selon une autre caractéristique, la valeur du couple de pré-vissage est d'environ 1 Nm.According to another characteristic, the value of the pre-screwing torque is approximately 1 Nm.

Selon une autre caractéristique, les moyens de maintien précités comportent au moins deux crochets prévus sur la surface intérieure de la seconde partie (respectivement la surface extérieure de la première partie), lesdits crochets étant aptes à coopérer avec des évidements de forme complémentaire prévus sur la surface extérieure de la première partie (respectivement sur la surface intérieure de la seconde partie).According to another characteristic, the aforementioned holding means comprise at least two hooks provided on the inner surface of the second part (respectively the outer surface of the first part), said hooks being able to cooperate with recesses of complementary shape provided on the outer surface of the first part (respectively on the inner surface of the second part).

Selon une autre caractéristique, ces crochets et leurs évidements correspondants sont au nombre de trois et sont équirépartis autour de l'axe de l'accessoire.According to another feature, these hooks and their corresponding recesses are three in number and are equidistributed around the axis of the accessory.

Selon une autre caractéristique, ces moyens de pré-vissage comportent au moins deux nervures (ou portions de surfaces lisses) prévue(s) sur la surface intérieure de la seconde partie, ces deux nervures (ou portions de surface lisse) étant destinées à coopérer avec deux portions de surface lisse (ou respectivement deux nervures) située(s) en regard de ces nervures (ou portions de surface lisses), et appartenant à la surface extérieure de la première partie.According to another characteristic, these pre-screwing means comprise at least two ribs (or portions of smooth surfaces) provided on the inner surface of the second part, these two ribs (or portions of smooth surface) being intended to cooperate with each other. with two portions of smooth surface (or respectively two ribs) located (s) facing these ribs (or smooth surface portions), and belonging to the outer surface of the first part.

Selon une autre caractéristique, ces nervures sont au nombre de trois et sont équiréparties autour de l'axe de l'accessoire.According to another characteristic, these ribs are three in number and are evenly distributed around the axis of the accessory.

Selon une autre caractéristique, la première partie comporte une zone située entre les deux parties d'extrémités précitées comportant une rainure annulaire, cette zone étant apte à se casser à l'atteinte du bon couple de serrage.According to another characteristic, the first part comprises a zone situated between the two abovementioned end portions comprising an annular groove, this zone being able to break upon reaching the right tightening torque.

Selon une autre caractéristique, cette zone est située entre la seconde partie d'extrémité précitée et la collerette précitée.According to another characteristic, this zone is situated between the aforementioned second end portion and the abovementioned collar.

Selon une caractéristique particulière, l'embout précité présente une forme extérieure comportant six pans aptes à coopérer avec une forme complémentaire en creux prévue dans la tête de vis.According to a particular characteristic, the above-mentioned endpiece has an outer shape comprising six faces capable of cooperating with a complementary recessed shape provided in the screw head.

Selon une autre caractéristique, l'organe d'actionnement comporte un embout présentant une forme extérieure à six pans apte à coopérer avec un orifice de forme complémentaire prévu dans la seconde partie d'extrémité de la première partie.
La présente invention a encore pour objet un appareil de protection électrique comportant au moins un point de raccordement d'un conducteur sur la plage de raccordement de l'appareil, cet appareil étant caractérisé en ce que ce raccordement est réalisé au moyen d'un accessoire comportant les caractéristiques précédemment mentionnées prises seules ou en combinaison.According to another characteristic, the actuating member comprises a tip having an outer hexagonal shape adapted to cooperate with a complementary shaped orifice provided in the second end portion of the first portion.
The subject of the present invention is also an electrical protection device comprising at least one connection point of a conductor on the connection area of the appliance, this appliance being characterized in that this connection is made by means of an accessory having the above mentioned features taken alone or in combination.

Selon une caractéristique particulière, ce conducteur est un câble souple ou un câble rigide ou bien une cosse sertie sur un câble.According to a particular characteristic, this conductor is a flexible cable or a rigid cable or a terminal crimped on a cable.

Selon une autre caractéristique, la plage de raccordement précitée est une barre de connexion.According to another characteristic, the aforementioned connection range is a connection bar.

Selon une autre caractéristique, la vis précitée est une vis de borne.According to another characteristic, the aforementioned screw is a terminal screw.

Mais d'autres avantages et caractéristiques de l'invention apparaîtront mieux dans la description détaillée qui suit et se réfère aux dessins annexés donnés uniquement à titre d'exemple et dans lesquels :

  • La figure 1 est une vue en coupe axiale d'un accessoire selon une réalisation particulière de l'invention,
  • Les figures 2 et 3 sont deux vues en perspective, selon deux orientations différentes, du même accessoire,
  • Les figures 4 et 5 sont deux vues illustrant en perspective chacune deux accessoires selon l'invention, ces deux figures correspondant respectivement à deux couples de serrage différents, les deux accessoires de chaque figure comportant respectivement deux marquages différents correspondant à deux normes différentes,
  • La figure 6 est une vue partielle en coupe, d'une partie d'extrémité de l'accessoire,
  • La figure 7 est une vue partielle en coupe, de cette même partie d'extrémité, sans la partie intérieure ou vis de l'accessoire,
  • Les figures 8 et 9 illustrent respectivement dans une vue partielle en coupe, deux réalisations particulières de cette partie intérieure ou vis, ces deux réalisations correspondant respectivement à deux valeurs différentes de couple de serrage,
  • La figure 10 est une vue de dessus de la figure 6,
  • La figure 11 est une vue partielle en perspective, illustrant les différentes étapes permettant de réaliser le raccordement d'une cosse sertie sur une plage de raccordement, au moyen d'un accessoire selon l'invention, et
  • La figure 12 est une vue partielle en perspective, illustrant les différentes étapes permettant de réaliser le serrage d'une vis de borne, au moyen d'un accessoire selon l'invention.
But other advantages and features of the invention will become more apparent in the detailed description which follows and refers to the accompanying drawings given solely by way of example and in which:
  • The figure 1 is an axial sectional view of an accessory according to a particular embodiment of the invention,
  • The Figures 2 and 3 are two perspective views, according to two different orientations, of the same accessory,
  • The Figures 4 and 5 are two views illustrating in perspective each two accessories according to the invention, these two figures respectively corresponding to two different tightening torques, the two accessories each figure respectively comprising two different markings corresponding to two different standards,
  • The figure 6 is a partial sectional view of an end portion of the accessory,
  • The figure 7 is a partial sectional view of the same end portion, without the inner part or screw of the accessory,
  • The Figures 8 and 9 respectively illustrate in a partial sectional view, two particular embodiments of this inner part or screw, these two embodiments respectively corresponding to two different values of tightening torque,
  • The figure 10 is a top view of the figure 6 ,
  • The figure 11 is a partial perspective view, illustrating the various steps for making the connection of a crimped lug to a connection pad, by means of an accessory according to the invention, and
  • The figure 12 is a partial perspective view, illustrating the various steps for performing the tightening of a terminal screw, by means of an accessory according to the invention.

Sur les figures 1 à 9, on voit un accessoire de serrage S selon une réalisation particulière de l'invention, ledit accessoire étant destiné à être utilisé par un installateur sur site afin de réaliser le raccordement électrique entre un conducteur tel un câble 16 et la plage de raccordement d'un appareil de protection électrique tel un disjoncteur D.
Sur les figures 1 à 12, cet accessoire S comporte une première partie 1 comportant une première partie d'extrémité a, dite embout 2, destinée à être introduite dans une partie en creux 26 de forme complémentaire prévue dans la tête 25 d'une vis de serrage 24 (fig.11), telle la vis 27b d'une borne de serrage 27, et une seconde partie d'extrémité b, dite tête d'accessoire 3 destinée à coopérer avec un organe d'actionnement tel une clé 17 ou un tournevis. A cet effet, la tête d'accessoire 3 comporte un orifice 4 présentant une forme complémentaire à la forme extérieure de la partie d'extrémité de l'organe d'actionnement, de manière à permettre l'entraînement de l'accessoire S en rotation par l'organe d'actionnement 17. Avantageusement, ces deux formes sont constituées chacune de six pans plats.
Avantageusement également, la surface extérieure de l'embout 2 ainsi que la surface intérieure de la partie en creux 26 de la tête 25 de la vis de serrage 24 sont également constituées de quatre pans plats.On the Figures 1 to 9 , we see a clamping accessory S according to a particular embodiment of the invention, said accessory being intended to be used by an installer on site to make the electrical connection between a conductor such a cable 16 and the connection range of a electrical protection apparatus such as a circuit breaker D.
On the Figures 1 to 12 , this accessory S comprises a first part 1 comprising a first end part a, said end piece 2, intended to be introduced into a recessed part 26 of complementary shape provided in the head 25 of a clamping screw 24 ( fig.11 ), such as screw 27b a clamping terminal 27, and a second end portion b, said accessory head 3 intended to cooperate with an actuating member such as a key 17 or a screwdriver. For this purpose, the accessory head 3 comprises an orifice 4 having a shape complementary to the external shape of the end portion of the actuating member, so as to allow the drive of the accessory S in rotation by the actuating member 17. Advantageously, these two forms each consist of six flat panels.
Advantageously also, the outer surface of the nozzle 2 and the inner surface of the recessed portion 26 of the head 25 of the clamping screw 24 are also made of four flat panels.

Ainsi, cette tête d'accessoire 3 est destinée à permettre la préhension par un installateur, ainsi que l'actionnement au moyen d'un outil tel une clef 17 ou un tournevis à six pans, par ce même installateur, afin d'entraîner la vis 24 en rotation dans le but de réaliser le vissage précité, l'outil étant introduit dans l'orifice précité 4 de forme correspondante prévu dans la tête de l'accessoire 3.
Cet accessoire S comporte également une seconde partie 5 montée serrée autour de la première partie 1 de manière à envelopper la tête de l'accessoire 3 ainsi qu'une partie de l'embout 2 à l'exception de sa partie d'extrémité libre située du côté opposé à la tête de l'accessoire 3, à la manière d'un manchon.Thus, this accessory head 3 is intended to allow gripping by an installer, and the actuation by means of a tool such as a key 17 or a hex screwdriver, by the same installer, to cause the screw 24 in rotation in order to achieve the aforementioned screwing, the tool being introduced into the above-mentioned orifice 4 of corresponding shape provided in the head of the accessory 3.
This accessory S also comprises a second part 5 mounted tightly around the first part 1 so as to surround the head of the accessory 3 and a part of the tip 2 with the exception of its free end portion located the opposite side to the head of the accessory 3, in the manner of a sleeve.

Avantageusement, cette première partie 1 est réalisée en un matériau métallique, tandis que la seconde partie 5 est réalisée en une matière plastique.Advantageously, this first part 1 is made of a metallic material, while the second part 5 is made of a plastic material.

Cette première partie 1 de l'accessoire est apte à se briser en deux portions 1a,1b respectivement première et seconde, lors du vissage réalisé par la mise en service de l'organe d'actionnement 17, lorsque la course de vissage a atteint la valeur correspondant au couple de serrage souhaité. Cette brisure a lieu en une zone z située entre la tête d'accessoire 3 et l'embout 2, cette zone z comportant un enlèvement de matière 6 prévu à cet effet de manière à affaiblir l'embout 2 à cet endroit et faciliter la brisure. Tel qu'illustré sur les figures 8 et 9, l'enlèvement de matière 6 réalisé sous la tête 3 de l'accessoire pourra être réalisé de manière différente en fonction du couple de serrage à partir duquel l'accessoire S est susceptible de se briser.
Ainsi, sur la figure 8, cet enlèvement de matière 6 sera réalisé sous la forme d'une rainure 13 usinée à droite pour un couple de serrage de 5Nm, et sous la forme d'une rainure 14 présentant un usinage réalisé à gauche pour un couple de serrage de 9Nm.This first part 1 of the accessory is able to break in two portions 1a, 1b respectively first and second, during the screwing done by the commissioning of the actuating member 17, when the tightening stroke has reached the value corresponding to the desired tightening torque. This breaking takes place in a zone z located between the accessory head 3 and the tip 2, this zone z comprising a removal of material 6 provided for this purpose so as to weaken the tip 2 at this point and facilitate breakage. . As illustrated on Figures 8 and 9 , the removal of material 6 made under the head 3 of the accessory may be made differently depending on the tightening torque from which the accessory S is likely to break.
So, on the figure 8 this removal of material 6 will be in the form of a groove 13 machined to the right for a tightening torque of 5Nm, and in the form of a groove 14 having a machining performed on the left for a tightening torque of 9Nm.

Tel que plus particulièrement illustré sur les figures 6 et 7, cet accessoire 5 comporte également des moyens de maintien 20,21,23 prévus en partie sur la première partie 1 et en partie sur la seconde partie 5, ces moyens étant aptes à retenir la première portion 1a de la première partie 1 à l'intérieur de la seconde partie 5, après la brisure lorsque la première portion 1 a continue à tourner sous l'action de l'organe d'actionnement.As more particularly illustrated on Figures 6 and 7 this accessory 5 also comprises holding means 20,21,23 provided partly on the first part 1 and partly on the second part 5, these means being able to retain the first portion 1a of the first part 1 to the inside the second part 5, after breaking when the first portion 1 continues to rotate under the action of the actuating member.

Selon cette réalisation particulière illustrée, ces moyens de maintien comportent trois crochets 20,21,22 prévus sur la surface intérieure 8 de la seconde partie 5, lesdits crochets étant aptes à coopérer avec des évidements de forme correspondante 23 prévus sur la surface extérieure 10 de la première partie 1.According to this particular embodiment illustrated, these holding means comprise three hooks 20, 21, 22 provided on the inner surface 8 of the second part 5, said hooks being capable of cooperating with recesses of corresponding shape 23 provided on the outer surface 10 of the first part 1.

Cet accessoire S comporte également des moyens 7 à 10 pour permettre de réaliser un pré-vissage de la vis de serrage 24 avant de réaliser le vissage effectif, de manière à faciliter et rendre plus rapide la manoeuvre de raccordement.
Tel que plus particulièrement visible sur la figure 7, ces moyens comportent trois nervures 7 prévues sur la surface intérieure 8 de la deuxième partie 5, ces nervures 7 étant destinées à coopérer avec des portions lisses 9 prévues en regard de ces nervures sur la surface extérieure 10 de la première partie 1 de manière à réaliser un pincement de cette première partie 1 par la seconde 5, ce pincement étant apte à solidariser ces deux parties en rotation, lors de l'actionnement de l'accessoire S en rotation manuellement. On notera qu'avantageusement, ces nervures 7 sont équiréparties autour de l'axe X de l'accessoire S. On notera que la situation pourra être inversée, en ce sens que les nervures 7 pourront être prévues sur la première partie 1 et coopérer avec des portions lisses correspondantes 9 prévues sur la seconde partie 5.
On notera que la valeur du couple de prévissage sera avantageusement de 1 Nm.
Avantageusement, ce prévissage sera facilité par la présence d'une collerette 11 sur la surface extérieure 12 de la seconde partie 5 et s'étendant sensiblement perpendiculairement à cette partie, cette collerette de saisie 11 permettant à la fois de pré-visser le conducteur à la main et d'extraire l'accessoire brisé des appareillages.This accessory S also comprises means 7 to 10 to allow a pre-screwing of the clamping screw 24 before making the actual screwing, so as to facilitate and make the connection maneuver more quickly.
As more particularly visible on the figure 7 these means comprise three ribs 7 provided on the inner surface 8 of the second part 5, these ribs 7 being intended to cooperate with smooth portions 9 provided opposite these ribs on the outer surface 10 of the first part 1 so as to make a pinch of this first part 1 by the second 5, this pinch being adapted to join these two parts in rotation, when actuating the accessory S manually rotating. Note that advantageously, these ribs 7 are equidistributed around the axis X of the accessory S. Note that the situation can be reversed, in that the ribs 7 can be provided on the first part 1 and cooperate with corresponding smooth portions 9 provided on the second part 5.
It will be noted that the value of the biasing torque will advantageously be 1 Nm.
Advantageously, this pruning will be facilitated by the presence of a flange 11 on the outer surface 12 of the second portion 5 and extending substantially perpendicularly to this portion, this gripping collar 11 allowing both to pre-screw the driver to the hand and extract the broken accessory from the equipment.

Ainsi, en fonctionnement, l'accessoire S selon l'invention est introduit dans l'orifice 26 de la vis de serrage 24 par l'intermédiaire de son embout 2. Puis, l'on procède à un prévissage du conducteur en agissant sur la collerette 11 au moyen de deux mains.
Puis, l'on réalise le serrage au moyen d'un outil 17 introduit dans l'orifice 4 prévu dans la tête 3 de l'accessoire S jusqu'à l'atteinte du couple préconisé par le constructeur d'appareillage, après quoi l'accessoire se brise au niveau de la section sécable de la zone z de saisie.
Après quoi, l'accessoire brisé S est retiré des appareils par l'intermédiaire de la collerette de saisie 11, puis jeté, les deux portions 1a,1b de la première partie 1 de l'accessoire S restant à l'intérieur de la seconde partie 5 grâce à la pression exercée par la seconde partie 5 de l'accessoire S sur la première 1.
La figure 11 illustre les différentes étapes du raccordement d'un câble 16 sur la plage de raccordement d'un appareil par l'intermédiaire d'une cosse sertie 15 sur le câble 16, au moyen d'un accessoire S selon l'invention.Thus, in operation, the accessory S according to the invention is introduced into the orifice 26 of the clamping screw 24 via its endpiece 2. Then, the conductor is preached by acting on the flange 11 by means of two hands.
Then, the tightening is carried out by means of a tool 17 introduced into the orifice 4 provided in the head 3 of the accessory S until the torque recommended by the equipment manufacturer is reached, after which the The accessory breaks at the breakable section of the gripping zone z.
After which, the broken accessory S is removed from the devices via the gripping flange 11, and then thrown, the two portions 1a, 1b of the first part 1 of the accessory S remaining inside the second part. part 5 thanks to the pressure exerted by the second part 5 of the accessory S on the first 1.
The figure 11 illustrates the different steps of connecting a cable 16 to the connection range of an appliance via a crimped lug 15 on the cable 16, by means of an accessory S according to the invention.

En -1-, la vis de serrage 24 ayant été introduite dans un orifice de la cosse 15, cet ensemble est introduit en-2- dans un logement du boîtier B de l'appareil de manière que la cosse 15 soit amenée en appui sur la plage de raccordement, après quoi la vis 24 est introduite dans un orifice prévu dans la plage de raccordement, puis vissée dans un écrou (non visible) placé derrière cette plage.
Puis, l'on introduit en -3- l'embout 2 de l'accessoire S dans l'orifice 26 prévu à cet effet dans la vis de serrage 24. Puis, l'on réalise un prévissage manuel de l'accessoire S, ce prévissage permettant un maintien de la vis 24 par rapport à l'appareil. Puis, l'on réalise -en 4- le vissage de l'accessoire S au moyen d'une clef à six pans 17 coopérant avec l' orifice 4 de forme correspondante prévu dans l'accessoire S jusqu'au point de rupture de la première partie 1 de l'accessoire S. Après quoi, l'accessoire constitué par la seconde partie 5 de l'accessoire S et les deux portions brisées 1 a, 1 b de l'accessoire sont retirés en -5- du boîtier, puis jetés.
Sur la figure 12, l'on réalise le raccordement d'un câble 16 avec la plage de raccordement d'un appareil au moyen d'une vis de borne 27b.
Tout d'abord, le câble 16 est introduit dans l'ouverture 27a de la borne 27. Après quoi en -1-, l'accessoire S est introduit dans un orifice du boîtier B de l'appareil, puis introduit par son embout 2 dans l'orifice 26 de la vis de borne 27b.
Puis, l'on réalise un prévissage manuel du conducteur, suivi d'un vissage en -2- au moyen d'un outil à six pans introduit dans l'ouverture prévue à cet effet dans l'accessoire S. Puis, lorsque le couple de serrage est atteint et la brisure réalisée, l'ensemble de l'accessoire S est retiré de l'orifice du boîtier et jeté en -3-.
Ainsi, après la brisure, les dernières portions 1a et 1b de l'accessoire S sont maintenues dans la seconde partie 5 de l'accessoire S grâce à la présence des moyens de maintien 20,21,22,23.In -1-, the clamping screw 24 having been introduced into an orifice of the lug 15, this assembly is introduced into a housing of the housing B of the apparatus so that the lug 15 is brought into abutment on the connecting range, after which the screw 24 is inserted into an orifice provided in the connection area, then screwed into a nut (not visible) placed behind this range.
Then, the tip 2 of the accessory S is inserted into the opening 26 provided for this purpose in the clamping screw 24. Then, the accessory S is manually pruned, this foresight for maintaining the screw 24 relative to the device. Then, it is realized -en 4- screwing the accessory S by means of a hexagon key 17 cooperating with the correspondingly shaped orifice 4 provided in the accessory S to the breaking point of the first part 1 of the accessory S. After which, the accessory constituted by the second part 5 of the accessory S and the two broken portions 1a, 1b of the accessory are removed in -5- of the housing, then discarded.
On the figure 12 a cable 16 is connected to the connection area of an appliance by means of a terminal screw 27b.
Firstly, the cable 16 is introduced into the opening 27a of the terminal 27. After which in -1-, the accessory S is introduced into an orifice of the housing B of the apparatus, then introduced by its end 2 in the hole 26 of the terminal screw 27b.
Then, the driver is manually pruned, followed by a screw in -2- by means of a hexagonal tool introduced into the opening provided for this purpose in the accessory S. Then, when the couple clamping is achieved and the breakage performed, all of the accessory S is removed from the orifice of the housing and thrown -3-.
Thus, after breaking, the last portions 1a and 1b of the accessory S are held in the second portion 5 of the accessory S by virtue of the presence of the holding means 20,21,22,23.

On a donc réalisé selon l'invention un accessoire de chantier jetable destiné aux installateurs sur site, cet accessoire restant d'une seule pièce de manière à éviter les chutes d'objets métalliques dans le tableau.Thus, according to the invention, a disposable construction accessory was made for the on-site installers, this accessory remaining in one piece so as to avoid the falling of metallic objects in the board.

Cet accessoire permet le serrage au bon couple par l'intermédiaire de n'importe quel outil à 6 pans de 4mm de largeur présent dans la caisse à outils de l'utilisateur.
Il permet de réaliser également un pré-vissage du câble à serrer, lors de sa mise en place, à une valeur de 1 Nm environ, cela permettant un travail rapide et aisé, à deux mains.
Cet accessoire permet d'équiper toute une gamme d'appareillages électriques, d'un système de serrage au bon couple.This accessory allows you to tighten to the right torque by means of any 4mm wide hexagonal tool present in the user's toolbox.
It also allows a pre-tightening of the cable to be tightened, when it is put in place, to a value of about 1 Nm, which allows a fast and easy work with two hands.
This accessory makes it possible to equip a whole range of electrical equipment, a tightening system with the right couple.

Bien entendu, l'invention n'est pas limitée aux modes de réalisations décrits et illustrés qui n'ont été donnés qu'à titre d'exemple.
Au contraire, l'invention comprend tous les équivalents techniques des moyens décrits ainsi que leurs combinaisons si celles-ci sont réalisées suivant son esprit.Of course, the invention is not limited to the embodiments described and illustrated which have been given by way of example.
On the contrary, the invention comprises all the technical equivalents of the means described and their combinations if they are carried out according to its spirit.

Claims (21)

Accessoire de serrage destiné à réaliser le serrage de deux éléments l'un par rapport à l'autre par l'actionnement d'une vis, ledit accessoire comportant une partie dite première, cette partie dite première comportant une première partie d'extrémité formant un embout apte à coopérer avec la tête de vis précitée, et une seconde partie d'extrémité apte à coopérer avec un organe d'actionnement, de telle manière que l'activation de l'organe d'actionnement entraîne le vissage de la vis et le serrage précité, cette première partie étant apte à se briser en deux portions lors de l'atteinte du couple de serrage préconisé, respectivement une première portion comportant la première partie d'extrémité précitée et une seconde portion comportant la seconde partie d'extrémité précitée, caractérisé en ce qu'il comporte une seconde partie (5) montée serré autour de la première partie (1), des moyens de maintien (20,21,22,23) prévus en partie sur la première partie (1) et en partie sur la seconde partie (5) et étant aptes à retenir la seconde portion (1b) de la première partie (1) à l'intérieur de la seconde partie (5) de l'accessoire S de manière à empêcher que cette seconde portion (1b) ne sorte de cette seconde partie de l'accessoire après la brisure de la première partie.Clamping accessory for clamping two elements relative to each other by the actuation of a screw, said accessory having a so-called first portion, said first portion having a first end portion forming a tip adapted to cooperate with the aforementioned screw head, and a second end portion adapted to cooperate with an actuating member, so that the activation of the actuating member causes the screwing of the screw and the aforesaid clamping, this first part being able to break in two portions upon attaining the recommended tightening torque, respectively a first portion comprising the aforementioned first end portion and a second portion comprising the aforementioned second end portion, characterized in that it comprises a second part (5) mounted tightly around the first part (1), holding means (20,21,22,23) provided in part on the first part (1) part (1) and partly on the second part (5) and being able to retain the second portion (1b) of the first part (1) inside the second part (5) of the accessory S of in order to prevent this second portion (1b) from coming out of this second part of the accessory after the breaking of the first part. Accessoire selon la revendication 1, caractérisé en ce qu'il comporte des moyens dits de pré-vissage (7,8,9,10) prévus en partie sur la première partie (1) et en partie sur la seconde (5), ces moyens étant aptes à permettre un pré-vissage de l'accessoire S par un actionnement manuel de cette seconde partie (5).Accessory according to claim 1, characterized in that it comprises so-called pre-screwing means (7,8,9,10) partially provided on the first part (1) and partly on the second part (5), these means being able to allow a pre-screwing of the accessory S by manual actuation of this second part (5). Accessoire selon la revendication 1 ou 2, caractérisé en ce qu'il comporte une collerette de saisie (11) en saillie sur la surface extérieure (10) de ladite seconde partie (5) et s'étendant sensiblement perpendiculairement à ladite surface, cette collerette de saisie (11) permettant à la fois de pré-visser le conducteur (16) à la main et d'extraire l'accessoire S des appareillages lorsque le couple de serrage préconisé est atteint.Accessory according to claim 1 or 2, characterized in that it comprises a gripping flange (11) projecting from the outer surface (10) of said second portion (5) and extending substantially perpendicularly to said surface, this gripping flange (11) allowing both pre-screw the conductor (16) by hand and extract the accessory S equipment when the recommended tightening torque is reached. Accessoire selon la revendication 3, caractérisé en ce que cette collerette (11) est venue de matière avec la seconde partie (5).Accessory according to claim 3, characterized in that this flange (11) is integral with the second portion (5). Accessoire selon l'une quelconque des revendications précédentes, caractérisé en ce que la première partie (1) de l'accessoire S est réalisée en un matériau métallique.Accessory according to any one of the preceding claims, characterized in that the first part (1) of the accessory S is made of a metallic material. Accessoire selon l'une quelconque des revendications précédentes, caractérisé en ce que la seconde partie (5) de l'accessoire S est réalisée en une matière plastique.Accessory according to any one of the preceding claims, characterized in that the second part (5) of the accessory S is made of a plastic material. Accessoire selon l'une quelconque des revendications précédentes, caractérisé en ce que cette seconde partie (5) comporte une zone sur laquelle est gravée la valeur du couple de serrage correspondant au point de rupture de la première partie (1) et/ou est représentée une couleur représentative de ce couple.Accessory according to any one of the preceding claims, characterized in that this second part (5) comprises a zone on which is engraved the value of the tightening torque corresponding to the breaking point of the first part (1) and / or is represented a representative color of this couple. Accessoire selon l'une quelconque des revendications précédentes, caractérisé en ce que la valeur du couple de serrage correspondant au point de rupture est de 9Nm+/-0,5 ou 5Nm+/-0,5.Accessory according to any one of the preceding claims, characterized in that the value of the tightening torque corresponding to the breaking point is 9Nm +/- 0.5 or 5Nm +/- 0.5. Accessoire selon l'une quelconque des revendications 2 à 8, caractérisé en ce que la valeur du couple de pré-vissage est d'environ 1 Nm.Accessory according to any one of claims 2 to 8, characterized in that the value of the pre-screwing torque is approximately 1 Nm. Accessoire selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens de maintien précités (20 à 23) comportent au moins deux crochets (20 à 22) prévus sur la surface intérieure (8) de la seconde partie (5) (respectivement la surface extérieure (10) de la première partie (1)), lesdits crochets (20,21,22) étant aptes à coopérer avec des évidements de forme complémentaire (23) prévus sur la surface extérieure (10) de la première partie (1) (respectivement sur la surface intérieure (8) de la seconde partie(5)).Accessory according to any one of the preceding claims, characterized in that the aforementioned holding means (20 to 23) comprise at least two hooks (20 to 22) provided on the inner surface (8) of the second part (5) ( respectively the outer surface (10) of the first portion (1)), said hooks (20,21,22) being adapted to cooperate with recesses of complementary shape (23) provided on the outer surface (10) of the first part (1) (respectively on the inner surface (8) of the second part (5)). Accessoire selon la revendication 10, caractérisé en ce que ces crochets (20,21,22) et leurs évidements correspondants (23) sont au nombre de trois et sont équirépartis autour de l'axe X de l'accessoire S.Accessory according to claim 10, characterized in that these hooks (20,21,22) and their corresponding recesses (23) are three in number and are evenly distributed around the axis X of the accessory S. Accessoire selon l'une quelconque des revendications 2 à 11, caractérisé en ce que ces moyens de pré-vissage (7 à 10) comportent au moins deux nervures (7) (ou portions de surfaces lisses) (9) prévue(s) sur la surface intérieure (8) de la seconde partie (5), ces deux nervures (7) (ou portions de surface lisse (9)) étant destinées à coopérer avec deux portions de surface lisse (ou respectivement deux nervures) située(s) en regard de ces nervures (ou portions de surface lisses), et appartenant à la surface extérieure (10) de la première partie (1).Accessory according to any one of claims 2 to 11, characterized in that these pre-screwing means (7 to 10) comprise at least two ribs (7) (or portions of smooth surfaces) (9) provided (s) on the inner surface (8) of the second part (5), these two ribs (7) (or smooth surface portions (9)) being intended to cooperate with two portions of smooth surface (or respectively two ribs) located (s) facing these ribs (or portions of smooth surface), and belonging to the outer surface (10) of the first part (1). Accessoire selon la revendication 12, caractérisé en ce que ces nervures (7) sont au nombre de trois et sont équiréparties autour de l'axe X de l'accessoire S.Accessory according to claim 12, characterized in that these ribs (7) are three in number and are equidistributed around the axis X of the accessory S. Accessoire selon l'une quelconque des revendications précédentes, caractérisé en ce que la première partie (1) comporte une zone z située entre les deux parties d'extrémités précitées (a,b) et comportant une rainure annulaire (13,14), cette zone z étant apte à se casser à l'atteinte du bon couple de serrage.Accessory according to any one of the preceding claims, characterized in that the first part (1) comprises a zone z situated between the two abovementioned end portions (a, b) and comprising an annular groove (13, 14), this zone z being able to break when reaching the correct tightening torque. Accessoire selon les revendications 3 et 14, caractérisé en ce que cette zone z est située entre la seconde partie d'extrémité précitée (b) et la collerette précitée (11).Accessory according to claims 3 and 14, characterized in that this zone z is located between the aforementioned second end portion (b) and the aforementioned flange (11). Accessoire selon l'une quelconque des revendications précédentes, caractérisé en ce que l'embout précité (2) présente une forme extérieure comportant six pans aptes à coopérer avec une forme complémentaire en creux (26) prévue dans la tête (25) de vis (24).Accessory according to any one of the preceding claims, characterized in that the abovementioned end piece (2) has an outer shape comprising six faces capable of cooperating with a complementary recessed shape (26) provided in the head (25) of screws ( 24). Accessoire selon l'une quelconque des revendications précédentes, caractérisé en ce que l'organe d'actionnement (17) comporte un embout (2) présentant une forme extérieure à six pans apte à coopérer avec un orifice (4) de forme complémentaire prévu dans la seconde partie d'extrémité (b,3) de la première partie (1).Accessory according to any one of the preceding claims, characterized in that the actuating member (17) comprises a tip (2) having an outer hexagonal shape adapted to cooperate with a hole (4) of complementary shape provided in the second end portion (b, 3) of the first portion (1). Appareil de protection électrique comportant au moins un point de raccordement d'un conducteur sur la plage de raccordement de l'appareil, caractérisé en ce que ce raccordement est réalisé au moyen d'un accessoire S selon l'une quelconque des revendications précédentes.Electrical protection device comprising at least one connection point of a conductor on the connection area of the device, characterized in that this connection is made by means of an accessory S according to any one of the preceding claims. Appareil selon la revendication 18, caractérisé en ce que ce conducteur (16) est un câble souple ou un câble rigide ou bien une cosse (15) sertie sur un câble.Apparatus according to claim 18, characterized in that said conductor (16) is a flexible cable or a rigid cable or a lug (15) crimped on a cable. Appareil selon la revendication 18 ou 19, caractérisé en ce que la plage de raccordement précitée est une barre de connexion.Apparatus according to claim 18 or 19, characterized in that the aforementioned connection range is a connection bar. Appareil selon l'une quelconque des revendications 18 à 20, caractérisé en ce que la vis précitée est une vis de borne (27).Apparatus according to any one of claims 18 to 20, characterized in that said screw is a terminal screw (27).
EP17154097.4A 2016-03-29 2017-02-01 Item for tightening to the correct torque Active EP3225360B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1652678A FR3050132B1 (en) 2016-03-29 2016-03-29 TIGHT COUPLING ATTACHMENT, AND ELECTRICAL PROTECTION DEVICE COMPRISING AT LEAST ONE TERMINAL CONNECTED THROUGH SUCH AN ACCESSORY

Publications (2)

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EP3225360A1 true EP3225360A1 (en) 2017-10-04
EP3225360B1 EP3225360B1 (en) 2020-07-29

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US (1) US10347999B2 (en)
EP (1) EP3225360B1 (en)
CN (1) CN107237804B (en)
BR (1) BR102017005589B1 (en)
ES (1) ES2818534T3 (en)
FR (1) FR3050132B1 (en)
RU (1) RU2757910C2 (en)

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Also Published As

Publication number Publication date
FR3050132A1 (en) 2017-10-20
RU2017110048A3 (en) 2020-03-19
ES2818534T3 (en) 2021-04-13
US10347999B2 (en) 2019-07-09
US20170288319A1 (en) 2017-10-05
CN107237804A (en) 2017-10-10
BR102017005589A2 (en) 2017-11-21
BR102017005589B1 (en) 2022-11-29
RU2017110048A (en) 2018-10-01
EP3225360B1 (en) 2020-07-29
FR3050132B1 (en) 2018-08-17
CN107237804B (en) 2021-01-15
RU2757910C2 (en) 2021-10-22

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